Breakdown of QCD coherence?

We reconsider the calculation of a non-global QCD observable and find the possible breakdown of QCD coherence. This breakdown arises as a result of wide angle soft gluon emission developing a sensitivity to emission at small angles and it leads to the appearance of super-leading logarithms. We use t...

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Detalles Bibliográficos
Autores principales: Kyrieleis, A, Forshaw, J R, Seymour, M H
Lenguaje:eng
Publicado: 2006
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.22323/1.035.0031
http://cds.cern.ch/record/1006209
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author Kyrieleis, A
Forshaw, J R
Seymour, M H
author_facet Kyrieleis, A
Forshaw, J R
Seymour, M H
author_sort Kyrieleis, A
collection CERN
description We reconsider the calculation of a non-global QCD observable and find the possible breakdown of QCD coherence. This breakdown arises as a result of wide angle soft gluon emission developing a sensitivity to emission at small angles and it leads to the appearance of super-leading logarithms. We use the `gaps between jets' cross-section as a concrete example and illustrate that the new logarithms are intimately connected with the presence of Coulomb gluon contributions. Numerical estimates of their potential phenomenological significance are presented.
id cern-1006209
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
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spelling cern-10062092019-09-30T06:29:59Zdoi:10.22323/1.035.0031http://cds.cern.ch/record/1006209engKyrieleis, AForshaw, J RSeymour, M HBreakdown of QCD coherence?Particle Physics - PhenomenologyWe reconsider the calculation of a non-global QCD observable and find the possible breakdown of QCD coherence. This breakdown arises as a result of wide angle soft gluon emission developing a sensitivity to emission at small angles and it leads to the appearance of super-leading logarithms. We use the `gaps between jets' cross-section as a concrete example and illustrate that the new logarithms are intimately connected with the presence of Coulomb gluon contributions. Numerical estimates of their potential phenomenological significance are presented.hep-ph/0612202oai:cds.cern.ch:10062092006-12-16
spellingShingle Particle Physics - Phenomenology
Kyrieleis, A
Forshaw, J R
Seymour, M H
Breakdown of QCD coherence?
title Breakdown of QCD coherence?
title_full Breakdown of QCD coherence?
title_fullStr Breakdown of QCD coherence?
title_full_unstemmed Breakdown of QCD coherence?
title_short Breakdown of QCD coherence?
title_sort breakdown of qcd coherence?
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.22323/1.035.0031
http://cds.cern.ch/record/1006209
work_keys_str_mv AT kyrieleisa breakdownofqcdcoherence
AT forshawjr breakdownofqcdcoherence
AT seymourmh breakdownofqcdcoherence

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